sched: Use this_rq() helper
It is a few instructions more efficent to and slightly more
readable to use this_rq()-> instead of cpu_rq(smp_processor_id())-> .
Size comparison of kernel/sched/fair.o:
text data bss dec hex filename
27972 122 26 28120 6dd8 fair.o.before
27956 122 26 28104 6dc8 fair.o.after
Signed-off-by: Nathan Zimmer <nzimmer@sgi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1368116643-87971-1-git-send-email-nzimmer@sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index c61a614..f2c9c0c 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5418,10 +5418,9 @@
static inline void set_cpu_sd_state_busy(void)
{
struct sched_domain *sd;
- int cpu = smp_processor_id();
rcu_read_lock();
- sd = rcu_dereference_check_sched_domain(cpu_rq(cpu)->sd);
+ sd = rcu_dereference_check_sched_domain(this_rq()->sd);
if (!sd || !sd->nohz_idle)
goto unlock;
@@ -5436,10 +5435,9 @@
void set_cpu_sd_state_idle(void)
{
struct sched_domain *sd;
- int cpu = smp_processor_id();
rcu_read_lock();
- sd = rcu_dereference_check_sched_domain(cpu_rq(cpu)->sd);
+ sd = rcu_dereference_check_sched_domain(this_rq()->sd);
if (!sd || sd->nohz_idle)
goto unlock;